112Protected VLAN: Reference Instance 1Member Role State Flush-count Last-flush-time-----------------------------------------------------------------------------GigabitEthernet1/0/1 MASTER ACTVIE 5 16:37:20 2013/02/21GigabitEthernet1/0/2 SLAVE STANDBY 1 17:45:20 2013/02/21Smart link group 2 information:Device ID: 000f-e23d-5af0Preemption mode: ROLEPreemption delay: 1(s)Control VLAN: 110Protected VLAN: Reference Instance 2Member Role State Flush-count Last-flush-time-----------------------------------------------------------------------------GigabitEthernet1/0/2 MASTER ACTVIE 5 16:37:20 2013/02/21GigabitEthernet1/0/1 SLAVE STANDBY 1 17:45:20 2013/02/21You can use the display smart-link flush command to display the flush messages received on adevice.# Display the flush messages received on Device B.[DeviceB] display smart-link flushReceived flush packets : 5Receiving interface of the last flush packet : GigabitEthernet1/0/2Receiving time of the last flush packet : 16:25:21 2013/02/21Device ID of the last flush packet : 000f-e23d-5af0Control VLAN of the last flush packet : 10Smart Link and CFD collaboration configuration exampleNetwork requirementsAs shown in Figure 25, Device A, Device B, Device C, and Device D form a maintenance domain (MD)of level 5. Device C is a smart link device, and Device A, Device B, and Device D are associated devices.Traffic of VLANs 1 through 200 on Device C is dually uplinked to Device A by Device B and Device D.Configure the CFD CC function for Smart Link, so that; Traffic of VLANs 1 through 100 is uplinked toDevice A by Device C through GigabitEthernet 1/0/1 (master port of smart link group 1). Traffic ofVLANs 101 through 200 is uplinked to Device A by Device C through GigabitEthernet 1/0/2 (masterport of smart link group 2). When the link between Device C and Device A fails, traffic is rapidlyswitched to the slave port of each smart link group, and switched back to the master ports after the faultis cleared.For more information about CFD, see "Configuring CFD."